Carbureter.



. 1. 11AM|110N-` cARBunEIER. APPLICATION FILED SEPT. 4| 19H.,V I'

a SHEETS-SHEET `2.

i APPLICATION FILED SEYPT. 4*. 19N. 4 1,234,756. f, Patented July 31,1917.

3 SHEETS-SHEET 3.

BELToN TATTNALL HAMILTON. or QH'URC'H END. FINCHLEY, ENGLAND.

JARBU BETER.

Specification of Letters Patent.

Patented July. 3l, 1917.

Application filed September 4. 1914. Serial No. 880.258.

lie it` known that l. lil-:wrox 'l`.\'r|j.\'.\iil. ll.\.\|i11iox. residing in (`hnrch llnd. Finch'- ley. Middlesex. England. have invented certain new and useful improvements in (1arhurcters t'or lfntcrnal*(ou|ln|stion lingines, of which the following;` is a specification.

It luisalready been proposed to admit to the engine either a mixture ole petrol and air or a. mixture ot' petroleum and air or a mixture ol these two substances jointly from separate carbureting 'or vaporiziugr devices by the agencyvof separatevalves which can be initially set for that purpose. into a common passage controlled h v a separate throttle. Valve aud it has, moreover. heen surer- .gested for the purpose ot supplying either petroleum vapor and air or petrol vapor and air to provide. a 'threenvay valve which is moved in an axial direction -liy the governor for controlling'y the maxiurum quantity of the individual mixtures and angularly hy 'hand whereby one of the mixtures may he gradually` cut oft' while the admission ot' the other is gradually increased.

Now the 'carlnu'etcr accordinglr to this m- -ventiori'enahles one or several ditl'ereut l'uel mixtures to he. admitted separately or. jointly likewise by producing the mixtures in several individual carhureters separately. but; in contra-distinction to the known arrangements provision is made. ot' several separate substantially rectangular or rhomlioidal ports t'or admiltingthe individual mixtures to the engine which are. so arranged with regard to separate rectangular or rhomboidal outlets leading l'rom the miximgr chambers of the. carhureters as to he ,movable thereon in two"directions parallel` at all when tlieircom'mon member is actu-V ated for the puiposeol': etfeeting the adjust nient.

'A eonstructional example of the invention is illustrated in thev accompanying drawings showing a' carhureter arrangement; hereinafter referred to as a bi-flielcarbureter in lwhich two ditterent kinds of fuel,

for instance. petrol andparattin are to be used in the engine by the simultaneous ro'- visionot' two carlmreters, one adaptet to form the .mixture t'rom petrol and the other from paratliir i Figure 1 illustrates an end view of this 'arhuretein y Fig. is a vertical section of Fig. l 4taken on the line A-ll.

Figs. Ii. l and 5 indicate diagrammatically the use ot' the invention in the carburetor for only one fuel. tor instance, petrol, Figi 3 showing the position t'or slow light running tlioposition of the openings `for slow light' running. Fig.V T at haltthrottle and Fig. 8 attull throttle. 4

rlhe construction of theI tvijo carbnreters 4constitutingr together the bi-fuel carbnreter is /f'l- .w' well known -heing substantially" of the type referred to in the specification of my prior British Letters Patent No. 24544/ 151051. `Iaeh ot' these carbnretrs forms an individual unit. For the purpose of this invention these two carbureters are rigidly connected or formed integral ont-'with the other.- lty will of. Course be understood that any desired number .of such individualcarlun-etersv .could he comhinedina similainianuer. These curhuretcvs are designtaed e a-nd o and as already stated they are identical in construit-tion; while for the un` derstaiuling.r of this invention it should be assumed that' the ca'rbureter .n is supplied with ypetrol and the carbllreter c' with paratlin. and thnt'the mixtures of these two fuels are readily formed in the usual man-` ner in the mixingr chamber of each carbu- 'reter separately. 1E=ieh earbureter is Iprovided with a tloat chamber 1 to which the respectivo fuel is supplied .byway of a bore,`

2 autonnitieally controlled by a'needle valve, YS. 'Air 1sy supplied to eaeh-earbureter by way of a socket 4. In each carburetor thcV fuel, controlled by means ofafurtheluneedle valve 5, together Vwith the air, lion bod termined' preferably -abiy or cylindn'cai shape 'screwed to the induction pipe o way if a. mixing mixing chamber carburetor' c is designated b a and in the case ofthe carbureter o by' The valve 8 admitting. air to the mixing chamber in each case is constituted by ,a ,substantiall conical y and its seat or cmiiiterpart gliI conoidal curvature so that' a mixture of particularly desirable properties' is obtained in Veach-carbu'retei' in thewell lm own manner. .Y

A common chamber or housing:10preferisconnected with the casing of each carbureter spherical-'socket 11, which sockets as shown are integral with the housing 10;. The-lionsL ing 10 is. provided with a central opening-12 confined by a Harige 13 ada ted' to be the engine. Arranged within this casing 10 is a valve-14 having the form of a lcylindrical sleeve which is snugly fitted -in but is` the longitudinal dimension of thehousin l() so as to be capable oflongitudinal displaement therein. i t

This cylindrical sleeve forms -in this case the'- common iiember'and is provided with two separate slots or throttle ports 15, 16,

preferably of? rectangular or #rhomboidal shape' as' shown in-'Figs 3 to 8 of the accom,` Panie drawings, sired 'with quadrangular out ofthemiirin'g chamber. a 'of et openings 17 the -carbureter l c andtheV other 16 with the similar outlet opening 41'8jof the mixing chamber b of the carburetor c sb thatvby longitudinal or axialdisplac'ement of the' sleeve 14' v the required `relative proportions of y the throttle- Aporta-,to be brought .in to re ster with 'the are inA this case respective outlet passages l simultaneously set. For the purpose of axially d lacingv 'orv setting the throttle ports'theigl eeve may be provided with 'an axial egtensionv19 bymeans of which the driver is able to a suitable lever 20 or Vother known con'- well-known manner. l vFor this tension 19 -is provided, forA instance, as

iengaging by means of g in :tiere-mentioned, through shown, with 'a grooved A lever 20 is'provided with two lateral lugs collar 21 and the I pins 22 -in the groove the collarf2l SQ that by the driver exerting a ullon a flexible connection 23 orthe like t e'lever'20 is turnedabout-its pivotl rate admission ports'they are'set to predetermine'the maximum quantity ,of each individual 'mixture to. be admitted there- 24 to. any desired extent' and thereby moves .the throttle-valve-14 axially to azcorrespondingextent. Theslee've rotatableso Aregister with at .the same. timeis as simultaneously to bring-into ports 'adjusted as which the individual ntixturesare admitted, that isi to say, the 'supply 9i the mixturesto the engine-f--To end the throttle valve as ferredto, the throttle as a de-4 mixture shorter than b one tore 'ster when desitions with regard to adjust it with the aidA of taneously "in sion ports,

shown is preferably actuated by a rotary arm 25 which by means of a boss or collar 26 is mounted onV the square-,shaped extension 19 and is suitably actuated by the driver,

It will of course be understood that the preliminary adjustment of the throttle ports with the same effect may be obtained by rotary movement and the regulation of the quantity to the engine by an axial displacement if desired without departing from the spirit of the invention, Y

The size and position of the individual slots or throttle ports 15, 16 in the sleeve may of course be so chosen as to render it possible by the displacement of the throttle valve to cause the outlet of one chamber of one carbureter to be entirely closed auto! A matically as soon as the outlet from the other mixing chamber is entirely open or moreover,` by suitabl shaping or posit on- 35 ing the ports in the t rottle valve or further y suitably constructing the latter or itsv actuating mechanism so as to provide for a combined rotary and-axial movement to be y imparted to the throttle valve for the ad- 904 justing purpose, the admission areas of the ports' in the throttle valve maybe varied to any differentdegree relatively to one another as will ,be readily understood from an i inspection of Figs. 3 to 8, in which as already enplained the throttle ports 15, 16 in the cqumonlmember are shown diagram- .maticall :by vway'of example in v arious pothe outlet o enings '17 and.18 so that either onlyone iii ividual carbureter' or both carburetersv jointl may 'be employed to deliver their individual mixtures from their mixing chambers 'a b in. regulable quantities to the engine,l f i AWhat I claim and desire to secure by .Letters Patent is: 'l

1..-In a multiple fuel carbureter for the admission to the engine jointly of different fuels in the form of individual mixtures the combination' with Va plurality of carbureters having substantially rectangular individual mixture outlets te'rimnatinp,r in a common through and by movement: in

rection the quantities of all individual mixtures actually' admitted are varied simulconstant ratio in all the admissubstantially asset forth.

'2. In almultiple carburetor for the tothe engine jointly of different l I the said sleeve in angular direction enablin` any desired portion of that predetermine maximum opening of each admission port 1l to be brought into actual register for all the ports simultaneously, substantiallyas described. V

In testimony whereof I have afixed my signature in presence of two witnesses.

BELToN TATTNALL HAlILToll. Witnesses:

W.y E. Roem. 

